1. Working with one chicken breast at a time, put chicken between 2 sheets of wax paper and pound to 1/2" thickness. Transfer chicken breasts to a resealable plastic bag.

2. Combine the remaining ingredients in a food processor and blend until smooth. Pour yogurt mixture over the chicken, seal bag, and turn to coat. Marinate chicken in the refrigerator for at least 3 hours or overnight.

3. Build a medium fire in a charcoal grill, or heat a gas grill to medium high. Brush grill grates with oil. Scrape excess marinade off the chicken; season with salt. Grill chicken, turning once until browned and cooked through, 3-4 minutes per side.